[PATCH] D91049: [clangd][remote] Check an index file correctly

[Aleksandr Platonov via Phabricator via cfe-commits]

ArcsinX created this revision.
Herald added subscribers: cfe-commits, usaxena95, kadircet, arphaman.
Herald added a project: clang.
ArcsinX requested review of this revision.
Herald added subscribers: MaskRay, ilya-biryukov.

There is not reason to check `std::make_unique<...>(..)` return value,
but `clangd::clang::loadIndex()` returns `nullptr` if an index file could not be loaded (e.g. incorrect version).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D91049

Files:
  clang-tools-extra/clangd/index/remote/server/Server.cpp


Index: clang-tools-extra/clangd/index/remote/server/Server.cpp
===================================================================
--- clang-tools-extra/clangd/index/remote/server/Server.cpp
+++ clang-tools-extra/clangd/index/remote/server/Server.cpp
@@ -357,13 +357,12 @@
     return Status.getError().value();
   }
 
-  auto Index = std::make_unique<clang::clangd::SwapIndex>(
-      clang::clangd::loadIndex(IndexPath));
-
-  if (!Index) {
+  auto SymIndex = clang::clangd::loadIndex(IndexPath);
+  if (!SymIndex) {
     llvm::errs() << "Failed to open the index.\n";
     return -1;
   }
+  auto Index = std::make_unique<clang::clangd::SwapIndex>(std::move(SymIndex));
 
   std::thread HotReloadThread([&Index, &Status, &FS]() {
     llvm::vfs::Status LastStatus = *Status;


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